Uptake and secretion fluxes across EFMs.

<p>(a) Oxygen uptake (scaled by glucose uptake). Flux values are shown by colors in the rate/yield spectrum (same points as in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1006010#pcbi.1006010.g002" target="_blank">Fig 2b</a>). The EFMs with the highest growth rates consume intermediate levels of oxygen. The other diagrams show <b>(b)</b> acetate secretion, <b>(c)</b> lactate secretion and <b>(d)</b> succinate secretion, each scaled by glucose uptake. Acetate secretion and <i>O</i>₂ uptake versus biomass yield are shown in Figure 9 in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1006010#pcbi.1006010.s001" target="_blank">S1 Text</a>.